Method and apparatus for regulating the weight of the laps produced by the scutcher in a spinning mill



Dec. 18, 1934. PFERDMENGES 1,985,056

METHOD AND APPARATUS FOR REGULATING THE WEIGHT OF THE LAPS PRODUCED BY THE SCUTCHER IN A SPINNING MILL Filed Aug. 25, 1930 lkmw 7) PatentedDec. 18, 1934 I UNITEDNSTATES {PA-TE METHOD ANDAPPARATUS FOR REGULAT- ING THE WEIGHT OF THE LAPS PRO- I 7 DUCED BY THE SOUTCHER INA SPINNING v Y @"Heinritzh Pfei'dmenges, Giesenkirchen/Rheydt,

' ,Germany ApplicationAugust 25,1930," Serial No. 477,792 .In' Gcrmany' Augus t 26, 1929 i j p "3 Claims (01-19140) This invention relates to scutchers and other is exerted on the plates 2), which consequently per: machines for preparing cotton and other fibrous form a movement which is transmitted through materials to which the cotton and the like to be the two armed leverd, link d1, two armed lever dz, treatedis supplied by means of a feed roller; A link d3, bell-crank lever d4, link d5 to thebelt forke uniform weight of the laps is an absolute neceswhich shifts the belt 1 on the two hyperbolic belt 45 'sity in every spinning mill, in order to be able to drums g1 and 92. The drum g1 is'dri'ven by the keep uniform in the further spinning operation scutcher and the drum g2 rotates the feed roll c the size of thread to which the spinning machine through the worm gear h and belt 1'. If the raw is set. In the known machines it has beenenmaterial band a passing through is thicker for 'deavoredto solve this problemby' automatically some reason or other than would correspond to 10 changing the passage speed of the raw material theprescribed lap weight, the belt 3 is shifted by band depending upon the thickness'of the band the adjusting mechanism towards the left and by means of a belt change gear with double coneconsequently the speed of rotation of the reed-r011 shaped or hyperbolic belt drums. The known'ma- 0 reduced to such an extent, that the product of chines however do not enable'the'passage feed of band thickness and "passage speed, that is the the raw material band to be regulated in exact quantity fed, and with uniformspecific weight of dependency upon its specific weight. The diflerthe raw material also the total weight fed, remains ence in the specific weight is due to the use of uniform'according to the'running speed. of the t I different raw materia1s,'especially in the case of machine. The profile lines of the double "h per wooland cotton of different weights. bolic gear are curved'according to' this require- 'The present invention solves the problem in ment. The arrangement above described is in that, when changing the-specific weight "of the itself known; 7 I raw material, another initial position of the belt The adjustment by means of the known gear I fork of the belt changing gear is set, which counsuflices aslong as thespecific weight of the raw teracts the changing the totalweight of raw ma material remains unchanged. This is however 25 terial running through the sc'utcher and caused subject to various influences. Besides, the origin by the alteration of the specific weight, and simulof the material; the temperature and moisture in taneously such an alteration in the ratio of transthe work room-play an'important part. If the I mission of the adjusting mechanism actuating specific weight changes,this must be compensated the belt fork is effected, that this alteration counfor. Such a compensation" can be obtained by ter-acts the change in the ratio of transmission changing the length of the nk d3 orof any 'other of the belt changing gear caused by the new inlink inth'e adjusting mechanism of the belt fork. itialposition of the belt fork, and that therefore If, for example, the specific weight becomes less in the case of a changing of the band thickness great, the'belt fork e can be shifted to the right the same total raw material weight will run by lengtheningthe link (23, so'that the passage 35 through the machine per revolutionin any case. speed of the raw material band a is increased. The adjustment ofthe initial position of the belt The changing of the length, of the link-can be fork is'effected'by changing the length of a'link done by judgment or according to calculation. in the adjusting mechanism of the belt fork and This adjustment-would fulfill its purpose, if the 40 the alteration'in the ratio of transmission of the raw material band would always 'remain the 40 adjusting mechanism by shifting the point of ensame, which vhowever is actually not the case. gagement of this link on one of the levers actu- If in such an instance'however, the thickness of ated by it; i l the raw materialband also changes, an error in H An embodiment of the invention is illustrated the gear ,is"'introcluced' by the previously perby way f example in the ompanying drawing formed adiustment cf the belt-fork. As res'ilt 45 in .which T I of the hyperbolic sha'pe of the belt drum, when Fig. '1 isa diagrammatic view'of the apparatus. the initial position of the belt f ha's'been displaced Fig. 2'is a side elevation of the adjustable parts; towards the right, afurther shifting of the belt, W -Fig. 3 is a cross section on line A'-B of Fig. 2; owing to theialteration of the thickness'oi" the; InFig.1-the raw material band runningthrough' band a, has agreater ,infiuence on" the speed the scutcher is des nated by a. It guided ratio-than hitherto when the initial position of known manner over ase'ries' of juxtaposed plates the belt; wassituated more ftowa-rds the leftf and limited at the top by the guide roll 0. By T isis due-to the fact; that the hyperbola'of the changing the thickness of the raw material band drum g1 extends more steeply onthe right than apassing through,apressure of different strength on the left. If therefore the thickness of the 55 band changes to a certain extent in the new initial position of the belt fork, the alteration in speed caused by the additional shifting of the belt is too great. The adjustment of the speed of rotation in direct dependency upon the weight of the raw material is practically impossible, because the adjusting forces available are too small owing to the light Weight of the material.

This difiiculty is overcome according to the invention, in that, simultaneously with an alteration of the length of the link d3, one of the engagement points of this link with which it engages the corresponding lever is also displaced. If for example, with a material having a low specific weight, the link (is is lengthened, the upper engagement point (23' of link :13 is at the same time shifted outwardly, i. e. towards the left on the lower arm d4 of the lever d4. By lengthening the link (is the belt fork has been shifted towards the right, that is the ratio of transmission between the pulley g1 and the drum g2 is in* creased. By shifting the engagement point (13' of the link (is, however, the lever arm (14' is lengthened, i. e. the ratio of transmission of the adjusting mechanism is reduced. Consequently, in the new initial position of the belt an alteration of the band thickness will only act to a smaller extent on the shifting of the belt fork.

In Figs. 2 and 3 the constructional details of the apparatus for carrying out the method are illustrated. The lever arm d4 of the bell-crank lever d4 is bifurcated, i. e. it consists of two parallel arms (see Fig. 3). In each arm an elongated slot k is formed, in which the pivot pins In of a carriage I can slide. These pins k1 represent the point of engagement of the link d3 on the lever arm (14. The carriage I has two bearings m1 and 7112 for two screw spindles m and m, which are situated substantially at right angles the one to the other. At their free ends the screw spindles m and ma e coupled by bevel wheels 01 and 02, or by some other suitable transmission device.

The horizontal screw spindle n1 moves in a nut p rigidly mounted in the lever arm d4 and carries on its outer end a hand wheel q. By rotating this wheel the carriage Z is shifted in the slots is. At the same time the rotation of the spindle 111 is transmitted through the bevel wheels to the vertical spindle in, which rotates in the nut r of the link 113 like a turn-buckle. Consequently the length of the link (is is changed at the same time. The-necessary ratio of the horizontal to the vertical adjustment'can be efiected by suitably selecting the toothed wheels as also the pitch of the screw spindles. At a suitable point of the device a scale with pointer is arranged, in order to indicate the shifting of a movable part relative to a stationary part. The scale may have a division, which indicates different kinds of raw material or different specific weights. A ball joint 5 is preferably arranged at a suitable point in the link d3, as the angle between the link (13 and the lever (14 changes. In order to be able to fix the adjusted position of thecarriage and the spindles, a lock nut t is provided on one .of the spindles, for example on the spindle n1, through which the adjusted position is secured. I

In order that the apparatus can be easily fitted on machines with levers and rods of diiferent length, it is advisable, to provide a second possibility of altering the effective length of the link d3 and the lever arm d4, for example by a further extensible part with a slot and securing device, or

by a turn-buckle with oppositely directed screw threads. The apparatus need only be once fitted to any machine to remain permanently. The apparatus can be provided in any link or links or also in one or several of the lever arms of the belt fork adjusting mechanism, provided it is possible to easily effect the simultaneous adjustment of both devices from a single point.

I claim;-

1. In an apparatus for regulating the weight of laps produced by a scutcher in a spinning mill the combination of two hyperbolic pulleys, comprising a driving pulley and a driven pulley, a belt on said pulleys, ,a guide roller above raw material adapted to regulate the quantity of material fed, driving means for said roller connected to said driving pulley, a lever system having an end element under the material adapted to allow same to yield downwardly according to the quantity of material fed and to transmit movement according to said yielding movement, a belt shifter on the other end of said lever system adapted to shift said belt on said pulleys according to the yielding movement of the material to regulate the speed of rotation of said guide roller according to the speed at which said driven pulley is driven by said driving pulley, and means connected up in said lever system adapted to positively andsimultaneously adjust two elements of said lever system to regulate the displacement of said belt according to the hyperbolic shape of said pulleys.

2. An adjusting means for the lever system specified in claim 1, comprising in combination with the belt shifter and the lever system, an operating lever for the belt in said system having a longitudinal slot adapted to transmit movement to said belt shifter, a carriage shiftable on said operating lever guided in said slot, a rocker lever in said system, a link connecting one end of said rocker lever, to said carriage, a screw spindle and nut in said link adapted to vary the length of said link, a screw spindle and nut on said operating lever engaging said carriage adapted to adjust the point of engagement of said lever on said operating link, and means for transmitting the movement of the spindle on said operating lever to the spindle in said link to eifect a positive simultaneous adjustment of the two elements.

3. An adjusting means for the lever system specified in claim 1, comprising in combination with the belt shifter and the lever system, an operating lever for the belt in said system having a longitudinal slot adapted to transmit movement to said belt shifter, a carriage shiftable on said operating lever guided in said slot, a rocker lever in said system, a link connecting one end of said rocker lever to said carriage, a screw spindle and nut in said link adapted to vary the length of said link, a screw spindle and nut on said operating lever engaging said carriage adapted to adjust the point of engagement of said lever on said operating link, and a pair of intermeshing bevel wheels one on the end of each of said spindles adapted to transmit the movement of the spindle on said operating lever to the spindle in said link to simultaneously effect the adjustment of the point of engagement of said link on said operating lever and the length of said link. I HEINRICH PFERDMENGES. 

